Amygdala responses to unpleasant pictures are influenced by task demands and positive affect trait

The role of attention in emotional processing is still the subject of debate. Recent studies have found that high positive affect in approach motivation narrows attention. Furthermore, the positive affect trait has been suggested as an important component for determining human variability in threat...

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Detalles Bibliográficos
Autores: Sanchez, Tiago A., Mocaiber, Izabela, Erthal, Fatima S., Joffily, Mateus, Volchan, Eliane, Pereira, Mirtes G., Araújo, Dráulio Barros de, Oliveira, Leticia
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:Brasil
Institución:Universidade Federal do Rio Grande do Norte (UFRN)
Repositorio:Repositório Institucional da UFRN
Idioma:inglés
OAI Identifier:oai:repositorio.ufrn.br:123456789/23114
Acceso en línea:https://repositorio.ufrn.br/jspui/handle/123456789/23114
Access Level:acceso abierto
Palabra clave:amygdala
attention
emotion
emotion regulation
positive affect
fMRI
PANAS
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repository_id_str
spelling Amygdala responses to unpleasant pictures are influenced by task demands and positive affect traitamygdalaattentionemotionemotion regulationpositive affectfMRIPANASThe role of attention in emotional processing is still the subject of debate. Recent studies have found that high positive affect in approach motivation narrows attention. Furthermore, the positive affect trait has been suggested as an important component for determining human variability in threat reactivity. We employed functional magnetic resonance imaging to investigate whether different states of attention control would modulate amygdala responses to highly unpleasant pictures relative to neutral and whether this modulation would be influenced by the positive affect trait. Participants (n = 22, 12 male) were scanned while viewing neutral (people) or unpleasant pictures (mutilated bodies) flanked by two peripheral bars. They were instructed to (a) judge the picture content as unpleasant or neutral or (b) to judge the difference in orientation between the bars in an easy condition (0 or 90∘ orientation difference) or (c) in a hard condition (0 or 6∘ orientation difference). Whole brain analysis revealed a task main effect of brain areas related to the experimental manipulation of attentional control, including the amygdala, dorsolateral prefrontal cortex, and posterior parietal cortex. Region of interest analysis showed an inverse correlation (r = -0.51, p < 0.01) between left amygdala activation and positive affect level when participants viewed unpleasant stimuli and judged bar orientation in the easy condition. This result suggests that subjects with high positive affect exhibit lower amygdala reactivity to distracting unpleasant pictures. In conclusion, the current study suggests that positive affect modulates attention effect on unpleasant pictures, therefore attenuating emotional responses.2017-05-26T14:01:09Z2017-05-26T14:01:09Z2015-03-04info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://repositorio.ufrn.br/jspui/handle/123456789/2311410.3389/fnhum.2015.00107ark:/41046/001300000h54tenginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNSanchez, Tiago A.Mocaiber, IzabelaErthal, Fatima S.Joffily, MateusVolchan, ElianePereira, Mirtes G.Araújo, Dráulio Barros deOliveira, Leticia2025-05-29T17:19:44Zoai:repositorio.ufrn.br:123456789/23114Repositório InstitucionalPUBhttp://repositorio.ufrn.br/oai/repositorio@bczm.ufrn.bropendoar:2025-05-29T17:19:44Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false
dc.title.none.fl_str_mv Amygdala responses to unpleasant pictures are influenced by task demands and positive affect trait
title Amygdala responses to unpleasant pictures are influenced by task demands and positive affect trait
spellingShingle Amygdala responses to unpleasant pictures are influenced by task demands and positive affect trait
Sanchez, Tiago A.
amygdala
attention
emotion
emotion regulation
positive affect
fMRI
PANAS
title_short Amygdala responses to unpleasant pictures are influenced by task demands and positive affect trait
title_full Amygdala responses to unpleasant pictures are influenced by task demands and positive affect trait
title_fullStr Amygdala responses to unpleasant pictures are influenced by task demands and positive affect trait
title_full_unstemmed Amygdala responses to unpleasant pictures are influenced by task demands and positive affect trait
title_sort Amygdala responses to unpleasant pictures are influenced by task demands and positive affect trait
dc.creator.none.fl_str_mv Sanchez, Tiago A.
Mocaiber, Izabela
Erthal, Fatima S.
Joffily, Mateus
Volchan, Eliane
Pereira, Mirtes G.
Araújo, Dráulio Barros de
Oliveira, Leticia
author Sanchez, Tiago A.
author_facet Sanchez, Tiago A.
Mocaiber, Izabela
Erthal, Fatima S.
Joffily, Mateus
Volchan, Eliane
Pereira, Mirtes G.
Araújo, Dráulio Barros de
Oliveira, Leticia
author_role author
author2 Mocaiber, Izabela
Erthal, Fatima S.
Joffily, Mateus
Volchan, Eliane
Pereira, Mirtes G.
Araújo, Dráulio Barros de
Oliveira, Leticia
author2_role author
author
author
author
author
author
author
dc.subject.por.fl_str_mv amygdala
attention
emotion
emotion regulation
positive affect
fMRI
PANAS
topic amygdala
attention
emotion
emotion regulation
positive affect
fMRI
PANAS
description The role of attention in emotional processing is still the subject of debate. Recent studies have found that high positive affect in approach motivation narrows attention. Furthermore, the positive affect trait has been suggested as an important component for determining human variability in threat reactivity. We employed functional magnetic resonance imaging to investigate whether different states of attention control would modulate amygdala responses to highly unpleasant pictures relative to neutral and whether this modulation would be influenced by the positive affect trait. Participants (n = 22, 12 male) were scanned while viewing neutral (people) or unpleasant pictures (mutilated bodies) flanked by two peripheral bars. They were instructed to (a) judge the picture content as unpleasant or neutral or (b) to judge the difference in orientation between the bars in an easy condition (0 or 90∘ orientation difference) or (c) in a hard condition (0 or 6∘ orientation difference). Whole brain analysis revealed a task main effect of brain areas related to the experimental manipulation of attentional control, including the amygdala, dorsolateral prefrontal cortex, and posterior parietal cortex. Region of interest analysis showed an inverse correlation (r = -0.51, p < 0.01) between left amygdala activation and positive affect level when participants viewed unpleasant stimuli and judged bar orientation in the easy condition. This result suggests that subjects with high positive affect exhibit lower amygdala reactivity to distracting unpleasant pictures. In conclusion, the current study suggests that positive affect modulates attention effect on unpleasant pictures, therefore attenuating emotional responses.
publishDate 2015
dc.date.none.fl_str_mv 2015-03-04
2017-05-26T14:01:09Z
2017-05-26T14:01:09Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/jspui/handle/123456789/23114
10.3389/fnhum.2015.00107
dc.identifier.dark.fl_str_mv ark:/41046/001300000h54t
url https://repositorio.ufrn.br/jspui/handle/123456789/23114
identifier_str_mv 10.3389/fnhum.2015.00107
ark:/41046/001300000h54t
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRN
instname:Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
instname_str Universidade Federal do Rio Grande do Norte (UFRN)
instacron_str UFRN
institution UFRN
reponame_str Repositório Institucional da UFRN
collection Repositório Institucional da UFRN
repository.name.fl_str_mv Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)
repository.mail.fl_str_mv repositorio@bczm.ufrn.br
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score 15,300719

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